Nozzle



sept'. 14,1926. 1,599,411l

J. J. GILSENAN NOZZLE Filed June 20. 1924 INVENTon ATTO EY' x |series ofadjacent streams which Patented Sept. 14, 192th PATENT OFFICE.

JOnHN J'. GILSENAN, OF NEWARK, NEW JERSEY.

NOZZLE.

Application led .Tune 20, 1924. Serial No. 721,186.

This invention relates to an improved noz-v zle which is designed toprovide particularly for fire protection, and which is adapted'toproject a thin, either extinguish a fire or to provide what, in 'firedepartment operation, is called a waterr curtain. I

The invention is particularly designed to provide a nozzle which can bequickly changed to provide for various installations and to meetdifferent requirements and one, which while light, is firm enough. towithstand hard usage and to keep its shape even under excessive waterpressure.

The particular object of the invention is to project an'unbroken sheetof water, that is, a curtain of water and not a spray or latter are noteflicient as heat will penetrate between the subdivisions ot the stream.This water curtain is accomplished by making the nozzle casing so thatthe Water undergoes a rather sharp change or acute change in directionat the same time that it begins to spread and it is thus formed into asmooth unbroken sheet, the slitv at the end serving only for regulatingits thickness and its direction. It this angular wall or spreader is notinterposed to spread the stream into a sheet, that. is, 4if Ithefan-shaped stream is projected straight ahead orl only slightly changedit does not form a sheet but soon after leaving 'the nozzle itshoestrings, In other words, it separates into independent small streamsor a spray, which is not the sort of stream that will serve as a watercurtain at a large fire or conflagration.

The invention is illustrated in the accompanying drawings in whichFigure 1 is a front view of a nozzle embodying my invention and Figure 2is a vertical section on line 2-2 in Figure l. Figure 3 shows the mannerofusing the nozzle on a vessel and Figure 4 shows the method of usingthe nozzle on the roof of a building to provide for a curtain of waterwhen necessary to cover the outer walls of the building. j

The nozzle consists of a casing 10 which for lightness, is usuallyIna-de of aluminum and is cast, having walls suiciently thick to providefor handling high pressure and` is provided at one end with acylindrical portion 11 which is adapted for connection to a -pipe 12either ,being screwed thereon or it can be fastened as illustrated bymeans of the flange 13 which receives the'bolts 14.

fan-shaped sheet of water to.

f United States Letters The nozzle has an outlet end and to provide fora broad, thm sheet of water, the outlet end 15 is arcuate or fan-shapedand isl outwardly tapering side walls 36 define the edges of the thinsheet of water into which the stream is transformed by the outwardlyflaring walls 17 and 35. The device can be made of one integral piece asa casting but I may form it by making the wall 17 in the form `of ablade which in the formshown has a rib 18 which is secured bv the bolts19.

To brace the plate 17 at the outlet end of the nozzle, one or more bolts21 may be used to hold 'these parts in their normal positions and whenhigh pressure is necessary because the strain on the casing is severe intransferring the stream of water quickly from a cylindrical stream vtoone that is very broad and narrow.

The casing l0 isusually made so that its outlet is at an angle to itsinlet end, this arrangement being of the greatest advantage as in theinstallation shown inl Figure 4 in which the nozzle is shown as securedto the pipe 22 and is directed downward over the end of the roof and isadapted to be in place at all times', being part of the permanentequipment of the structure. It will be eviden-t, however, that it can bea portable device used on the end of a line of hose. When it is used asa portable device the nozzle is very often used to 'spray such things aslumber piles, and in this case it is caused to rest on the ground and tohold it in position I may provide it with the `rib 23 of the desiredwidth and depth.

The device is also particularly adapted v for'use on ships and the like,as it can be lowered down through a' hatchway 24 `and when placed on abend pipe can be installed to direct a fan-like sheet of water along anyparticular deck and .I show a pipe 25 in Figure 3 which form of pipe forthis purpose will be more fully j Patent .j.,".1,476,810,l issuedDecember 11, 1923, for nozzle.

understood frommv yards or on the outer walls of buildings that areclose to danger of fire risks, I equip the nozzle with an automaticvalve for permitting the operation ofthe nozzle under veryVI high heat.In the drawing I show the valve 26 whichis a flap valve, pivoted' at 27at the inlet end of the, nozzle and having a gasket or Washer adapted tobe seated against the valve seatL 29 to shut o1f tlie water. l

The valve is held shut by a bracing arm inside the casing which restsagainst a suitable part of the valve easing and to illustrate ,thisfeature I show the "curved arm 34 resting against the fusible element 28usually a sheet of metalused for fusible and similar purposes, thiselement 28 being fastened in place to part of the easing and covering,vthe opening 29 through which the bracing arm 34 is adapted to projectwhen the water forces the valve open afterthe fusible element 28 hasmelted.

The flap valve 26 has a washeror other suitable means which seats itselfaround the edges of the -opening 29 when the valve 26 is swung to itsopen position so that when the valve is open there is no leakage at this-point. The projection of the bracing arm can be utilized inthe`.operation of ay signal,

electric or otherwise, and to vmake this clear I show in the drawing aswitch 3 1 which can beformed of 'plates as in an ordinary electricknife switch and the arm 34 comes between them and completes a circuitvin which "theyare placed so that either under fire conditions or due toaccident when the valve is open the alarm is actuated. Any 4 projects abroad flat sheet of Water 32 downward to entirely cover the buildingbelovt7 it and to a large extent to eachV side.

Small supplemental openings can be put in Where necessary to permitsmall streams as at 33 to be projected upward on the cornice or anyother elements above the nozzle. The nozzle is also lparticularlyadapted for use in projecting foamingl materials that are commonlycaused to flow over the contents of oil tanks to prevent or to stopcombustion since the flowing from the broad flat nozzle does not breakup the stream which under smaller stream conditions does happen and thefoaming appa- .i

ratus loses itsl efficiency.

I claim: i v

AA nozzle comprising an inlet portion and a lbody portion directlyconnected thereto, said body portion formed of an outwardly flaring walldisposed transversely across the inlet passage at an angle ofsubstantially tothe axis thereof, and a second voutwardly flaring Walljoined to' the rst wall by outwardly tapering side walls, said outwardlyHaring walls being spaced at their outer ends to provide a narrowelongated discharge opening. j i v j In testimony that I claim theforegoing, I have hereto set my hand,this 7th day of June, 1924. y n

JOI-IN J. GILSENAN.

